IQQ C18

Zelda

Headphoneus Supremus
Pros: Good SQ for the price; Strong build quality; battery
Cons: UI; Navigation; no manual; no firmware update option (no website); not suited for hungry gears; EQ options; slow/laggy system response; no gapless playback?
REVIEW – IQQ C18

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Price: $69, from Penonaudio

For full specifications please refer to the store product page – LINK


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Build Quality & Design:

The IQQ C18 arrives in a simple yet nice white box. Inside there’s the C18 player itself and a USB cable.
Build quality on the C18 is superb made of an all metal alloy body which is very solid and feel really durable too. The surface is smooth and while the device has some weight it’s still just 12mm thick making it pocket friendly enough for the daily portable use. The buttons are made of metal material as well, and just the wheel is made of plastic.
The C18 has a built-in 8GB flash memory with some audio files already included and also has one micro-SD card slot.
The navigation and playback controls are all placed on the frontal panel while the volume are on the right side. At the upper part there’re the power button with the 2 output connections, phone and lineout. At the bottom there’re the micro-USB port, micro-SD slot and reset and microphone.

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UI, Navigation, Firmware:

The TFT screen is colorful with a fair level of resolution for this price, easy to read and works fine under the sun. An interesting feature on the settings options is the possibility of changing the display theme style from vertical to horizontal icons display. Both look identical to what was used on the Fiio players.
Despite the lack of manual (and website) the navigation is quite intuitive and easy to figure out after some minutes of use. While not the most friendly interface it has the needed controls for simple playback and navigation. A Menu button under the left side of the screen and a Back on the right side (which works as Home to return back to the main screen if held for a couple of seconds). The power button works as screen off/on option as well. Playback and volume control is possible while screen off; for that it’s needed to setup it at the settings options.
The up and down controls under the menu button work as playback controls for previous/next track and backward/forward, and also as navigation through menus. The wheel can be used for navigation as well or for volume adjustment, and in the middle you’ll find the play/pause button.
The buttons may need some extra force to respond. And also, the main system response is a bit slow, especially when navigating through large file menus.

The current firmware seems stable enough most of the times. However, it may sometimes crush when handling certain larger files (Flac or similar). For system update it’s possible to contact the seller as well. Yet, the main flaw of the C18 system should be the laggy response to the controls. It’s not just the wheel lacking accuracy, but the whole response is slow.


PC connection and file transferring:

Pretty easy, just plug the player and it’ll be immediately recognized, at least under Win7 or 10 systems.

The two display themes:
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Battery, Hiss:

The rated battery duration is around ~55 hours, and it seems to be a fair statement. So far there was never the need to fully charge the battery even after some days of normal use of 2~3 per day at moderate volumes.
No hiss was noticed even with the most sensitive IEM/CIEMs sets.


Extra features:

The C18 also allows FM radio listening and voice recording (which seems of fairly decent quality)


Volume & Power:

The volume scales up to 100 steps. The jump from between steps is small enough to suit the easier to drive earphones. However, while the C18 can sound loud is not a too powerful DAP. For most standard earphones that usually for around 16~32 ohm and 100~110db, a 40/100 level should be enough to get a comfortable sound level. With some others sets as the VE Monk+ (64ohm), GR07 (50ohm), SM E80 (64ohm), it already went up to around 50/100 steps, and with higher impedance sets such as the VE Asura 2 (150ohm) or Sennheiser HD25 (70ohm) the volume reaches the 70/100, and still does not bring them their best performance.


EQ:

The equalization presets are not something worth mentioning, and are pretty much a cheap joke. However, the C18 still offers the common Custom 5-band option. It’s still nothing too great, but works fine if needed to tweak some small parts of the overall freq. as with most low budget oriented portable players from unknown Chinese companies.



Sound Impressions

Some of the gears used: Vsonic GR07, Dunu DN-2002, Fiio EX1ii, VE Duke and Asura 2, Senn HD-25 ii, Grado SR80e; Xduoo X3, Aune M1s, Fiio X3ii.

Utilizing a RKNanoD-N chip (as stated on the specs), the C18 is definitely a colored sounding DAP. The sound is presented in a very rich, full and musical way that while may not focus in being the most accurate it is not lacking in micro detail. Overall, it offers a warm and fairly sweet sound that starts from a fairly strong low-end response that goes all the way up to the midrange. Bass has a strong impact, which is well noticed when paired with the GR07 Classic, E80, R-50M or B150, and can get slightly boomier but not too aggressive with the Fiio EX1ii or DN-2002, and while not being particularly dominating it has more mid-bass focus than sub-bass. It is richer in texture and fun to listen, but makes the overall sound far from being neutral. Considering the extra quantity, the control remains quite good just not as tight as with the Xduoo X3 or Fiio X3ii.

Midrange is full with a sweet texture. Not too forward or so present as the bass but never distant; even with more v-shaped sets as the EX1ii, Finder X1 or DN-1000, the mids are well positioned, smooth and more engaging. A similar effect is achieved with the M50x and Grado SR80, though it may feel more congested and lacking in sense of air with the larger headphones. Balance is equal from low to upper mids and gives a good sense of separation and nice texture to voices.

Treble is very smooth and laid-back. Shows some limited extension and roll-off with more treble forward sets. Detail is not missing and it’s pretty good for this price, though not meant for more analytical listening. However, it pairs quite well with more aggressive earphones as the potential extra harshness or sibilance is subdued to a fair level. With the LZ A4 and Brainwavz B200 I found it too ‘safe sounding’ to my liking, but the synergy with the Fiio EX1ii is really nice.

Soundstage doesn’t feel too large but depth level is good enough. At higher volumes there’s some distortion and lack of refinement when compared to the Xduoo X3 or PAW Pico, but the C18 is definitely much better sounding than any of the current Sandisk and iShuffle options with a much coherent imaging and natural presentation.



Line Out/Amplification:
With Topping NX5 and Cayin C5

The LO port works well. It doesn’t have a fixed output volume so there’s still need to adjust it with the volume control of the player together with the amplifier in use. However, compared to the headphone output, the lineout starts lowering some decibels for a better pairing. With both the Topping NX5 and Cayin C5 the results are very positive, and despite the extra warm and smooth sound of the C18 both amplifiers are able to bring out a higher level of detail and resolution. For a portable use the NX5 is a better match as the ~30hr. battery goes well with the very long C18 battery.



Summary

Pros:
Good SQ for the price; Strong build quality; battery

Cons:
UI; Navigation; no manual; no firmware update option (no website); not suited for hungry gears; EQ options; slow/laggy system response; no gapless playback?


Rating: 3.5/5. Strong features with some reservations.

crabdog

Headphoneus Supremus
Pros: Great battery life. Transparency
Cons: UI can be sluggish. No breakpoint resume
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I own several different entry level Chinese DAPs and it's always interesting to see what a new model can do differently or improve upon compared to the others. There are a few characteristics that they have in common, things like dim, low resolution screens, illogical button/navigation configurations, varying degrees of sound quality and for the most part very good battery life. So of course when I had the chance to test the IQQ C18 I was very keen to see what it had to offer. Well after using this as my daily player for several consecutive weeks I think I have a pretty good idea and am now ready to share my thoughts with you, the reader. Read on to find out how the IQQ C18 performs.

Disclaimer

This sample was provided to me for the purpose of an honest review. I am not affiliated with the company or seller and all observations and opinions here are my own, based on my personal experience with the product.

The IQ C18 is currently selling for $69 and can be purchased from Penon Audio.

Penon homepage: http://penonaudio.com/IQQ-C18

Penon on AliExpress: https://www.aliexpress.com/store/1994049

Technical info

I'm just going to briefly cover some of the main specs here. For the full list you can check on Penon Audio (see the links above).

At the heart of the C18 is a RKNanoD-N. The RKnanoD is an ARM Cortex-M3 based microcontroller for Wireless Audio, MP3 player and IOT applications. It can support up to 24 bits 192k Hz sample rate lossless audio and DSD256. Display comes in a 2 inch TFT screen with a resolution of 320 * 240. There is 8GB of onboard memory and the player supports MicroSD (TF) card, up to 128GB.

Packaging and accessories

Content arrived in a plain white box, strangely without even any branding on it and just "HIFI Music Player" printed on the front. When you open it up you see the player under a layer of protective foam sitting in a cardboard section. Under the player is a USB charging/data transfer cable.

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Build and design

The C18 has an all metal body (2 colors, gold and silver available as far as I know) that has a nice texture and feel to it. It sits nicely in your hand, feels pretty durable and is also resistant to fingerprints and scratches which is good because there is no protective case provided or available at all. Overall the quality feels good but one thing to note is that the corners and top and bottom edges of the device are quite sharp. It has a good weight to it making it feel substantial yet not heavy.

The front panel starts with the 2 inch screen at the top which is surrounded by a thin black border. The next thing that catches your eye is the control or navigation wheel, consisting of a central metal button surrounded by a rotating rubberized section. The rubber provides a great grip allowing you to spin the wheel around easily with your thumb or finger. You can use this wheel to scroll up and down in the menus/lists.

Running down the left side are 3 buttons: M (menu), Rewind/back and Fast Forward/next. Just below the screen on the right side is the Back button used for going back to the previous screen in the menu or you can do a long press to return to the main menu screen.

The left side of the player is bare and on the right side you'll find the Volume control buttons.

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On the top are (from left to right) Power button, Line out, Headphone out.

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The bottom has (from left to right): Micro USB charge/date transfer port, Reset button and Micro SD card slot.

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User Interface

Let's start with the screen. Although the resolution is low text is fairly clear and easy to read. Album art is supported and while the images are small they look pretty good. The Now Playing screen has a whole bunch of information including:

  • current volume
  • headphones connected icon
  • track number/total tracks
  • playback mode
  • storage capacity
  • bit-rate/sample rate
  • artist
  • album name
  • genre
  • track info and format
  • progress bar
Brightness is not great so the screen can be difficult to see outdoors and near impossible to see in direct sunlight. There are a few reasons to have this type of screen, namely they require little processing power, extend battery life and keep costs down but it would be really great to see manufacturers adopt some better screens in the near future.

There are two interface styles available for the UI which is a nice addition. Style one uses blue as the primary color and the main menu is in a horizontal layout. Style two uses orange as the primary color and its main menu has a vertical orientation.

Speed of the interface is a little sluggish in comparison to some other budget DAPs (NiNTAUS X10, Mrobo C5) and suffers a little from input lag when navigating. It's a bit frustrating but not crippling, actually it's quite similar to the FiiO X1ii.

The control wheel has a good feel to it with stepped rotation but sometimes one click on the wheel will jump two lines on the screen. Perhaps a future firmware update might be able to improve this somewhat.

Settings are fairly basic as you'd expect and similar to what other budget DAPs offer. Unfortunately there's no support for gapless playback but what bothers me more than that is the lack of breakpoint resume. Now it gets a little hazy because breakpoint resume actually IS supported but only when playing from the built-in memory. So I guess that would be handy for audio books and such but if you plan on using a SD card for your files then it's something to keep in mind. If previously playing from a storage card the player will boot to the main menu and you'll need to start from scratch.

One feature of the C18 which you don't often see in the entry level players is lock screen button function custimization. You can choose which buttons are usable while the screen is turned off. The available options are:

  • basic playback (play/pause/FF/Rewind/volume)
  • volume only
  • all disabled
  • all effective
Overall the UI functions quite well, the only caveat being the occasional input lag. It's easy to navigate around and do what you need to do and as long as you're not in very bright sunlight you can see what you're doing.

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Sound

This is an area where the C18 does better than some of its competitors in my opinion. The sound is clean and transparent with good separation. To my ears it has a neutral sound, neither boosting or lacking anything in its dynamic range so what you'll hear is dependent on the tuning of your earphones or headphones.

There are several EQ presets available and a custom setting is also an option. The presets include:

  • normal
  • bass
  • heavy
  • pop
  • jazz
  • unique
  • equalizer (custom setting)
Battery life

Crazy good. During normal use you can get around 55 hours playtime out of a single charge which is exactly what is stated in the specifications. Very impressive. You can get a full charge in about 3 hours.

Comparisons

vs NiNTAUS X10 ($59-$65 USD)

Dedicated volume buttons on the IQQ give it a leg up. The rubber control wheel on the IQQ grips really well under your thumb but the big difference is that turning a single click on the NiNTAUS' wheel corresponds with a single line jump compared to the C18 which will often jump 2 lines per click. UI responsiveness goes to the X10 as it's much livelier than the somewhat sluggish C18. The NiNTAUS is bundled with a protective silicone case and it also supports breakpoint resume although the implementation isn't ideal. Both have exceptional battery life.

When it comes to sound there's not a great deal separating these but the C18 sounds a little cleaner to my ears. The IQQ has slightly less bass roll-off as can be seen in the graph below.

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Green = IQQ C18. White = NiNTAUS X10. Unloaded test.
vs Mrobo C5 V2
Build quality hands down goes to the Mrobo with its tank like construction and smooth corners and edges. The C18 has a better screen with higher res and larger album art. UI is faster and more responsive on the Mrobo. I'd say the sound is slightly better on the IQQ, with it being more transparent and not altering the original harmonics in recordings. Battery life is near identical with both being capable of 50+ hours of music playback on a single charge. There's very little difference overall in the capabilities of these DAPs and choice would come down to the little details or features that are most important to the user e.g. breakpoint resume or better screen etc.

Conclusion
Just like the previous budget DAPs that I've tested the IQQ C18 is a solid performer in context of the buying cost. The battery life will outlast any smartphone on the market and it supports all the common lossless file formats including DSD256. The screen does a good job of displaying information and album art so long as you're not in direct sunlight and it has a clear, transparent sound signature with additional EQ options to customize to your preference. Overall it's a good alternative to the X10 or C5 V2 with the only major drawback being no breakpoint resume support. For the asking price of $69 it's a great option especially if you need something that can go many consecutive days without need of a charge.
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